Raman spectroscopy is a technique that obtains molecular information through a unique scattering mechanism. Which of the following statements regarding the Raman method is/are TRUE?
a. The Stokes lines are generally more intense than their corresponding anti-Stokes lines.
b. The position of Stokes and anti-Stokes Raman lines will be symmetrical about the Rayleigh scattered light.
c. The production of Raman photons requires the excitation laser to provide enough energy to excite ground-state electrons to the first electronic excited state.
d. When the excitation laser impinges on an analyte, the greatest percentage of scattered photons are Stokes shifted.